Nosepiece for eyeglasses.



No. 707,883. Patented Aug.'26, I902.

G. F. WALL.

NOSEPIECE FOR EYEGLASSES.

(Application filed Feb. 7, 1902.)

(No Model.)

ma NORRIS versus 00.. mowm-na. msumomu. b. c.

llNrrED STATES PATENT 1 OFFICE.

CHARLES F. l/VALL, OF PHILADELPHIA, PENNSYLVANIA.

NOSEPIECE FOR EYEGLASSES.

SPECIFICATION forming part of Letters Patent No. 707,883, dated August26, 1902.

Application filed February 7, 1902. Serial No. 92,983. (No model.) I

Improvement in Nosepieces for Eyeglasses, of

which the following is a specification.

My invention consists of an improvement in nosepieces of eyeglassesembodying a clamp which will in a measure prove selfadjusting andprovide sufficient pressure to retain the glasses on the nose withoutdiscomfort to the wearer and prevent the glasses from tipping over fromthe top.

In carrying out the invention I apply to the clamp two springs which areconnected with the same and possess different tension or resiliencies,so as to occasion greater rigidity at the upper end of the nosepiecewhere it is required and less at the lower end where it is leastrequired.

Figure 1 represents an elevation of an eyeglass having my inventionapplied thereto. Fig. 2 represents a vertical section on linear aFig. 1. Fig. 3 representsan irregular vertical section of a portion on3/3], Fig. 2. Fig. 4 represents a perspective view of a portion of amodification.

Similar letters of reference indicate corresponding parts in thefigures.

Referring to the drawings, A designates a pair of eyeglasses, which,excepting the feature of my invention applied thereto, are of usualconstruction.

B designates the nosepieces thereof, the same consisting of clamps O andsprings D and E, which carry the same. The spring D is of U shape andhas one limb connected with the upper end of the clamp O and the otherlimbwith the post F of the glasses by means of the screw G. The spring Eis somewhat straight or slightly curved and has its upper end connectedwith the post F by means of the screw G and its lower end with thecorresponding portion ofthe clamp C by.

means of the loop H, it being evident that both springs depend from thepost F and serve to carry and sustain the clamp C. Said It will be seenthat the clamp is subjected to the action of a compound spring as formedon theback thereof; but greater pressure or rigidity is imparted to theupper end of the clamp where it is most needed, while the lower portionof the clamp is subjected to less pressure or rigidity. In other words,the two springs act one against the other, and the effect of this is toshorten the action of spring E, and thereby increase its stiffness, theresult of which is seen when pressure is brought to bear upon the upperpart of clamp 0, whereas pressure on the lower part of the clamp bringsonly the spring E into play for its entire length and gives a muchlessened resistance when pressure is brought to bear upon the lower partof clamp 0. Again, while the nosepiece is sufficiently resilient to havethe desired vertical motion there is also an added amount of siderigidity, which serves to retain the clamp nicely and firmly in positionon the nose without severity, the advantage of which is apparent.

Having thus described my invention, What I claim as new, and desire tosecure by Letters Patent, is-

1. In an eyeglass, a nosepiece-clamp and a compound spring in additionto and having both portions connected with said nosepiececlamp, oneportion of said spring carrying the clamp and the other having yieldingconnection therewith, said springs being disposed to act one against orin opposition to the other at opposite ends of said clamp.

2. In an eyeglass, a nosepiece clamp, a compound spring formedindependent of said nosepiece-clamp and composed of independent membersof different tension, one attached to said clamp and the other havingmovable connection therewith, said springs mounted one at each end ofsaid clamp to act one against the other, the one to regulate and tomodify the pressure at the lower end and the other to regulate andincrease the pressure at the upper end of said clamp.

23. In an eyeglass, a nosepiece clamp, a compound spring formed ofindependent members of difierent tension formed separate from saidnosepiece-clamp, one member being connected with the upper end of saidclamp and doubled up upon itself and the other member with the lower endthereof,

both members having a common connection nected with the lower end of theclamp and with the post of the glasses. the other member doubled uponitself and 10 4. In an eyeglass, a nosepiece-clamp and a having itsother end secured to the upper compound spring formed of independent endof said clamp.

members of different tension, said members CHARLES F. WALL. each havingan end connected with the post Witnesses: of the glasses, by meanscommon to both JOHN A. WIEDERSHEIM,

of said ends, one member being movabiy con- 0. D. MCVAY.

